.demo03 {
  height: 400px;
  background: antiquewhite;
  padding: 50px;
}
.demo03 p {
  font-size: 20px;
  margin: 20px 0;
}
.demo03 input {
  border: 1px solid grey;
  width: 200px;
  height: 30px;
}
.demo03 button {
  width: 100px;
  height: 30px;
  background: grey;
}
